The Irish army has blown up a makeshift bomb found in a bus near Dublin ahead of a historic visit by the Queen.
The visit is the first by a British monarch since Ireland won independence from London in 1921 and will go ahead despite the discovery, the Foreign Office says.
The military says an army bomb disposal unit blew up the device in the town of Maynooth, 25km from Dublin, on Tuesday, Reuters reports.
Ireland is mounting its largest-ever security operation to guard the Queen, using 8000 police and 2000 soldiers.
Aircraft will patrol the skies above her engagements and suspected dissidents have been arrested and questioned.
A second suspicious device found at a tram station in north Dublin was a hoax.
The monarch's four-day visit is about reconciliation and emphasising the strong bond, built on generations of Irish emigration, that existed between the countries even before a 1998 deal brought peace to Northern Ireland.